WO2002042532A1 - Procede pour carboniser une structure textile plane au moins a stabilite inherente - Google Patents

Procede pour carboniser une structure textile plane au moins a stabilite inherente Download PDF

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Publication number
WO2002042532A1
WO2002042532A1 PCT/EP2001/008449 EP0108449W WO0242532A1 WO 2002042532 A1 WO2002042532 A1 WO 2002042532A1 EP 0108449 W EP0108449 W EP 0108449W WO 0242532 A1 WO0242532 A1 WO 0242532A1
Authority
WO
WIPO (PCT)
Prior art keywords
fabric
preoxidized
laser beam
fibers
machine direction
Prior art date
Application number
PCT/EP2001/008449
Other languages
German (de)
English (en)
Inventor
Birgit Severich
Gerhard Schöpping
Original Assignee
Carl Freudenberg Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Freudenberg Kg filed Critical Carl Freudenberg Kg
Priority to EP01969466A priority Critical patent/EP1336000A1/fr
Priority to AU2001289718A priority patent/AU2001289718A1/en
Priority to US10/432,083 priority patent/US20040025261A1/en
Priority to JP2002545228A priority patent/JP2004526872A/ja
Publication of WO2002042532A1 publication Critical patent/WO2002042532A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles

Definitions

  • the invention relates to a method for carbonizing an at least inherently strong, textile fabric, in which pre-oxidized or a mixture of pre-oxidized and non-oxidized fibers are brought together and consolidated to form a fabric.
  • the object of the invention is to provide a simplified method for carbonizing at least inherently rigid, textile fabrics.
  • the object is achieved in that at least intrinsically strong, textile fabrics, in which pre-oxidized or a mixture of pre-oxidized and non-oxidized fibers are brought together and solidified to form the sheet-like structure, with the entry of air by means of a laser beam in a line or column shape at temperatures between 600 ° C and 900 ° C are heated, the heating takes place with increasing process performance.
  • the process powers introduced by means of laser are preferably between 0.01 and 0.5 Ws g "1.
  • the process powers used ensure a conversion of the starting fibers into carbonized fibers without burning them.
  • the heating is preferably effected with the aid of a CO 2 laser.
  • the invention further relates to a device for carrying out the method according to the invention, in which the laser beam is moved by a motor and is guided along adjoining tracks over the surface of the fabric in such a way that the fabric is irradiated essentially in the same way in all surface zones.
  • a homogeneously carbonized sheet is obtained by the device according to the invention.
  • the invention also relates to a carbonized nonwoven fabric which is produced by the method according to the invention and which has a bending stiffness of approximately 8 tabers to approximately 1 taber, a tensile strength (machine direction) of 0.4 to 4 N / mm 2 and a tensile strength (transverse to the machine direction) ) from 0.7 to 4 N / mm 2 , an elongation (machine direction) 0.12 to 14%, an elongation (transverse to the machine direction) from 0.15 to 19% and an air permeability at 200 Pa pressure difference from 200 to 1600 l / (m 2 * s), whereby products with high bending stiffness, high tensile strength, low elongation represent relatively stiff products with low air permeability and the opposite limit values of the parameters mentioned lead to products with high air permeability.
  • the carbonized sheet according to the invention has sufficient mechanical strength so that handling of the carbonized sheet is guaranteed. Compared to conventional processes, the stiffness of the fabric carbonized with CO 2 laser can be
  • Example 1 The invention is explained in more detail below using an example.
  • Example 1 The invention is explained in more detail below using an example.
  • Example 1 Example 1 :
  • a mechanically bonded nonwoven fabric with a basis weight of 120 g / m 2 is subjected to a treatment given in Table 1.
  • the laser power was increased suggestively in ten levels, with the treatment being repeated several times, especially at the beginning of the process at low power levels.
  • the maximum laser power was 1000 W.
  • the laser beam with a diameter of 14 mm was guided over the nonwoven fabric with a lateral scanning speed (in cross direction - CD) of 4 m / s and a line feed (in machine direction - MD) of 2 mm ,
  • the weight loss during carbonization with the CO 2 laser is approximately 50% by weight. This corresponds to the weight reduction that occurs during carbonization in the high-temperature furnace.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

La présente invention concerne un procédé pour carboniser une structure textile plane au moins à stabilité inhérente. Selon ce procédé, des fibres préoxydées ou un mélanges de fibres préoxydées et non oxydées sont combinées afin de former une structure plane, puis sont consolidées. La structure plane est réchauffée à des températures situées entre 600 DEG C et 900 DEG C, ligne par ligne ou colonne par colonne, au moyen d'un rayon laser, avec entrée d'air, et le réchauffement est réalisé avec des puissances de processus de plus en plus élevées.
PCT/EP2001/008449 2000-11-21 2001-07-21 Procede pour carboniser une structure textile plane au moins a stabilite inherente WO2002042532A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP01969466A EP1336000A1 (fr) 2000-11-21 2001-07-21 Procede pour carboniser une structure textile plane au moins a stabilite inherente
AU2001289718A AU2001289718A1 (en) 2000-11-21 2001-07-21 Method for the carbonization of an at least inherently stable two-dimensional textile structure
US10/432,083 US20040025261A1 (en) 2000-11-21 2001-07-21 Method for the carbonization of an at least inherently stable two-dimensional textile structure
JP2002545228A JP2004526872A (ja) 2000-11-21 2001-07-21 少なくとも固有安定性を有する繊維性面状形成物を炭素化する方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10057868A DE10057868C1 (de) 2000-11-21 2000-11-21 Verfahren zur Carbonisierung eines zumindest eigenfesten, textilen Flächengebildes
DE10057868.3 2000-11-21

Publications (1)

Publication Number Publication Date
WO2002042532A1 true WO2002042532A1 (fr) 2002-05-30

Family

ID=7664197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/008449 WO2002042532A1 (fr) 2000-11-21 2001-07-21 Procede pour carboniser une structure textile plane au moins a stabilite inherente

Country Status (6)

Country Link
US (1) US20040025261A1 (fr)
EP (1) EP1336000A1 (fr)
JP (1) JP2004526872A (fr)
AU (1) AU2001289718A1 (fr)
DE (1) DE10057868C1 (fr)
WO (1) WO2002042532A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116084060A (zh) * 2023-03-10 2023-05-09 长春理工大学中山研究院 一种聚丙烯腈基碳纤维激光预氧化方法和装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1945145A1 (de) * 1968-09-06 1970-03-12 Monsanto Co Verfahren zur Graphitierung von Fasern
US4370141A (en) * 1981-05-18 1983-01-25 Celanese Corporation Process for the thermal stabilization of acrylic fibers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477625A (en) * 1987-09-16 1989-03-23 Toray Industries Production of porous carbon fiber
JPS6477624A (en) * 1987-09-16 1989-03-23 Toray Industries Production of porous material made of carbon fiber
US5066433A (en) * 1988-02-16 1991-11-19 Hercules Incorporated Method of manufacturing carbon fiber using preliminary stretch
US5256344A (en) * 1989-02-23 1993-10-26 Hercules Incorporated Process of thermally stabilizing pan fibers
USH1052H (en) * 1989-06-30 1992-05-05 Method for stabilization of pan-based carbon fibers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1945145A1 (de) * 1968-09-06 1970-03-12 Monsanto Co Verfahren zur Graphitierung von Fasern
US4370141A (en) * 1981-05-18 1983-01-25 Celanese Corporation Process for the thermal stabilization of acrylic fibers

Also Published As

Publication number Publication date
DE10057868C1 (de) 2002-06-13
US20040025261A1 (en) 2004-02-12
JP2004526872A (ja) 2004-09-02
AU2001289718A1 (en) 2002-06-03
EP1336000A1 (fr) 2003-08-20

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